In my experience, I only had to remember that they are humans and what's normal to them might not be normal to me. I also practiced putting myself into their s

In my experience, I only had to remember that they are humans and what's normal to them might not be normal to me. I also practiced putting myself into their shoes. I realized they might be struggling and stressed and tired, too. I know this doesn't justify their behavior but sometimes being understanding is the best way. When my toxic coworker actually went on a 2-week vacation with no one bothering him, only with his family, he came back so refreshed and positive that it was scarier than him being grumpy and critical all the time in the previous months.